Spinning tong



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Sepit, 5, 1933. H. PENNINGTON SPINNING TONG Filed July 7, 19

2 Sheets-Sheet l HARE); Pam/m qToN INVENTOR BY MM di 13. W

ATTORNEYS p 19330 H. PENNINGTON 1325,97Q

SPINNING TONG Filed July 7, 1930 2 Sheets-Sheet 2 HAM Pauumqrorv INVENTOR ATTORNEY$ Patented Sept. 5, 1933 1,925,970 I UNITED STA ES PATENT OFFlCE srrrmme 'roua Harry Pennington, San Antonio, Tex. Application July 1, 1930. Serial No. 465,923 16 Claims. (cl. ar -r) My invention relates to tongs for handling pipe the jaw. Adjacent the inner end of the jaw in deep well operations. 6 is a through bolt 9 which furnishes a shaft In handling pipe in deep wells for oil, gas, upon which is rotatably mounted a sprocket sulphur, and the like, the drill stem or other pipe wheel 10. The sides of the jaws are extended ina being introduced into or removed from the hole wardly at 11 to form bosses which fit against 0 must be taken apart in section and, in connectthe sides of the sp 'fl ee and hold it cening or disconnecting one section from the other, term p p y in p t o the joints must be screwed up or unscrewed as The outer ends of the plates may be joined the case may be. As there are many joints to integrally. a Shown a 3 0 receive a latching be thus manipulated it is desirable that the joints bolt 12, which extends transversely through the 65 be made up or loosened at high speed, and furjaw. Said latching bolt extends beyond the sides thermore it is desirable that the joints be made of the jaw and pivotally pp a h g up until they are properly tightened but should member 13, spaced from the jaw y a washer 14. not be strained beyond the point necessary for a Adjacent the outer end of the jaw is a Shaft 5.

15 seal at the joint. fixed in position in the jaw andfurnishing a 70 It is an object of my invention to provide pipe bearing for two rollers 16 and a centrally positongs which may be employed to rotate the pipe tioned sprocket wheel 1'7. The two rollers are in the screwing up or unscrewing of these joints of ppr m y the Same d meter as the so that the connection may be quickly made or sprocket wheel and have their peripheries slightly broken. rounded to engage against the pipe and furnish 75 It is also an object to provide a device wherea bearing for the tongs D the p p by it is unnecessary to rotate the rotary mecha- Another jaw 18 is mounted in a position op nism connected with the drilling operation in posed to the jaw 6. It is pivoted upon a pin or order to make or break the connection. shaft 19 extending through the main jaw 6 at I desire to provide a power-driven tong which a position approximately opposite to that of the is safe and speedy, and uniform in the torque shaft 9 in the main jaw. Said pin furnishes a applied to tighten pipe threads or tool joints. pivot for the jaw 18 and also furnishes a mount- In carrying out my invention I contemplate ing for a sprocket wheel 20, which is positioned the use of means connected with the tong itself between the two sides of the jaw and isrotatable 3 whereby the pipe may be rotated relative to the on the pin. The jew 18 is arcuate in shape and body of the tong without the necessity of using has its outer end 21 formed with a notch or recess the engine employed upon the rotary. 22 to receive the cam shaped pin within the Referring to the drawings herewith, Fig. 1 latch member 13. Said latch comprises a yoke is a broken top view of a pipe tong embodying which may be swung around the end 21 of the my invention, certain parts being broken away Jaw 18 and snapped into position in the recess for greater clearness. 22 through means of the handle 24 of the said Fig. 2 is a side view taken at right angles to latch. The jaw 18 has a handle member 25, the view shown in Fig. 1, certain parts of the through which it may be swung to and from tong being broken away in section. closed position. There is also a handle member 40 In the construction of my tong, I provide a 26 on the base of the jaw 6, through which a 95 handle 1, which may be of the desired length, hold may be obtained upon the wrench in hansaid handle being broken off in the drawings. The dling the same. There is also an outwardly exforward end of the handle is provided with a tending staple or eyelet 27 in the handle adjarounded head 2, which furnishes a support for cent the head thereof, through which the wrench a power shaft 3 rotatable in said head. on the as a whole may be suspended in the derrick. opposite side of the head the same is extended The sprocket wheels previously mentioned laterally as shown in dotted lines at .4, and an have mounted thereon a sprocket chain 28, and, opening is provided to receive a pivot pin 5, as will be seen from Fig. 1,said sprocket chain upon which the main jaw 6 is pivoted. passes around the sprocket wheel 30, mounted The main jaw 6 is made up of two side plates upon the shaft 3. It passes from said wheel 30 105 '7, 7',shown best inFig. 2. These plates are spaced around the wheel 10 to the wheel 17 and this is apart to receive the head 2 of the handle. The looped back to better surround the pipe shown. shaft 3 is mounted only in the handle, and a at 31. From thence it passes around a sprocket recess, shown at 8 in Fig. 1, provides for the wheel 32 in the outer end of the jaw 18 and is no movement of the shaft 3 with the head toward brought back around the sprocket wheel 20 to the running of the chain over thus spinning the pipe and bdlineaindicatedat tobedrlvenposltively indlcatodat Saidmotorisdea- The motor may then be started to cause the the sprocket wheels, screwing or unscrewing the same as desired. It the 'Joint is being made up the spinning of the pipe will be continued until the joint is tightened to the proper degree, after which the motor will be immediatestalling or the same. By means of this tong I am enabled to screw up the joints in the pipe at an exceptional speed. The main engine operating the rotary may remain inactive. The tongs are simply clamped about the pipe and the motor 34 then employed to spin the tong to screw up the joint, after which the tongs may be quickly released and the draw works may be employed to shift the pipe into position for a second operation.

It is also to be noted that. the

01' the screw threads 01' the pipe.

Jhrtingpointatthemcketwheelfl. 'I'hedotnabowstlupothoithis Iprocke iy'lhelhattSisfilngod ype of electric motor. iaposed wheels 2; In a power driven pipe tong, a handle, a pair of Jaws pivoted toswing about a pipe, sprocket tighten and loosen said chain.

3. In a pipe tong an endless chain encircling and gripping the pipe, means to support the chain 5. In a pipe screwing tong, an endless chain, means to engage said chain about a pipe. means to drive said chain to spin said pipe, and means 115 means to to move said chain: through saidrotation, and 125 away from the pipe being gripped.

7: In a pipe tong, a handle, a head thereon, a

sprocket on said head, a jaw pivoted to said head, no

8. In a pipe screwing tong,

145 a tong body, a pair 01 jaws pivoted to open and close, .an endless chain carried by said jaws and said body, a plurality 01' sprockets for said chain, means to positively rotate one or said sprockets to move said chain,

to rotate the pipe.

9. In a pipe tong,

ma am one 'of said sprockets being mounted on said body and movable away from the pipe, upon increase of the torque required to rotate the pipe whereby said chain will more securely grip the pipe.

10. A spinning tong including a handle, a jaw pivoted thereto, a second jaw pivoted to said first jaw, an endless chain adapted to be held about the pipe by said jaws, a support for the chain on said handle, said support being eccentric with respect to the pivot point of said first jaw on said handle whereby turning of the handle to resist the torque of the pipe tends to move said support away from the pipe to tighten said chain about the pipe.

11. In a pipe spinning tong, a handle, an endless chain, a pair of jaws to encircle the pipe and hold said chain in frictional contact with the pipe to spin the same, a chain support adjacent the end of each jaw which has been passed about the pipe, and a drive sprocket ior said chain mounted on said handle, and a pivotal mounting for one of said jaws positioned eccentrically of said handle with respect to said drive sprocket whereby said handle will move about said pivot in resisting the rotation of the pipe.

12. In a pipe spinning tong, an endless chain to spin the pipe, means to loop said chain about the pipe, a latch for said means, a drive means for said chain, and an eccentric mounting for said first means whereby said chain will be tightened by said drive means directly in proportion to the resistance to rotation of the pipe.

-13. A spinning tong of the type wherein the grip on the pipe is increased according to the resistance to rotation of the pipe including a drive chain, jaws to support said chain looped about the pipe, and means to resist the torque on said chain from said pipe which tends to tighten the chain on the pipe.

14. A spinning tong of the type wherein the grip on the pipe is increased according to the resistance to rotation of the pipe including a drive chain, jaws about the pipe, and means to resist the torque on said chain from said pipe which tends to tighten the chain on the pipe, said last means includin a handle.

15. A tone of the character described including an endless rotated, means to loop said chain about the pipe so that it will have frictional contact with the pipe, means to exert a pull on said chain which will tend toreduce the size of the loop about the pipe, and a pivot connection between said first and said last means to absorb the reaction of the thrust of said last means,

16. A spinning tong including jaws to encircle the pipe, a handle, a pivot for said handle on one of said jaws, and about which the handle is adapted to move in resisting the torque of the pipe, an endless chain held about the pipe by said jaws, a drive sprocket for said chain mounted on said handle at a point other than said pivot whereby movement of the handle to resist torque tends to move said sprocket away from the pipe and tighten said chain.

to support said chain looped chain to embrace the pipe to be i 

